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Question

Thermodynamically most stable form of carbon is:

A
graphite.
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B
diamond.
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C
ionsdaleite.
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D
chaoite.
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Solution

The correct option is D graphite.
Diamond is stable upto 1500oC in vacuum but at 1800oC2000oC, it converts into graphite.

Thermodynamically most stable allotrope of Carbon is - Graphite at standard temperature and pressure.

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